Sort the output (for now just the classes and instance members).

lib/compiler/implementation/scanner/token.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 final int EOF_TOKEN = 0;
 
 final int KEYWORD_TOKEN = $k;
 final int IDENTIFIER_TOKEN = $a;
 final int DOUBLE_TOKEN = $d;
 final int INT_TOKEN = $i;
@@ skipping 108 matching lines @@
     : this.fromSource(info, new SourceString(value), charOffset);
 
   StringToken.fromSource(PrecedenceInfo info, this.value, int charOffset)
     : super(info, charOffset);
 
   String toString() => "StringToken(${value.slowToString()})";
 
   String slowToString() => value.slowToString();
 }
 
-interface SourceString extends Hashable, Iterable<int> default StringWrapper {
+interface SourceString extends Comparable, Hashable, Iterable<int>
+    default StringWrapper {
   const SourceString(String string);
 
   void printOn(StringBuffer sb);
 
   /** Gives a [SourceString] that is not including the [initial] first and
    * [terminal] last characters. This is only intended to be used to remove
    * quotes from string literals (including an initial '@' for raw strings).
    */
   SourceString copyWithoutQuotes(int initial, int terminal);
 
   String get stringValue();
 
   String slowToString();
 
   bool isEmpty();
 
   bool isPrivate();
 }
 
+int sourceStringCompare(SourceString string1, SourceString string2) {
+  Iterator<int> iterator1 = string1.iterator();
+  Iterator<int> iterator2 = string2.iterator();
+  while (iterator1.hasNext()) {
+    if (!iterator2.hasNext()) return 1;
+    int char1 = iterator1.next();
+    int char2 = iterator2.next();
+    int comparison = char1.compareTo(char2);
+    if (comparison != 0) return comparison;
+  }
+  if (iterator2.hasNext()) return -1;
+  return 0;
+}
+
 class StringWrapper implements SourceString {
   final String stringValue;
 
   const StringWrapper(String this.stringValue);
 
   int hashCode() => stringValue.hashCode();
 
+  int compareTo(SourceString other) {
+    if (other is StringWrapper) {
+      StringWrapper otherWrapper = other;
+      return stringValue.compareTo(otherWrapper.stringValue);
+    }
+    return sourceStringCompare(this, other);
+  }
+
   bool operator ==(other) {
     return other is SourceString && toString() == other.slowToString();
   }
 
   Iterator<int> iterator() => new StringCodeIterator(stringValue);
 
   void printOn(StringBuffer sb) {
     sb.add(stringValue);
   }
 
@@ skipping 269 matching lines @@
 final PrecedenceInfo STRING_INTERPOLATION_INFO =
   const PrecedenceInfo(const SourceString('\${'), 0,
                        STRING_INTERPOLATION_TOKEN);
 
 final PrecedenceInfo HEXADECIMAL_INFO =
   const PrecedenceInfo(const SourceString('hexadecimal'), 0, HEXADECIMAL_TOKEN);
 
 // For reporting lexical errors.
 final PrecedenceInfo ERROR_INFO =
   const PrecedenceInfo(const SourceString('?'), 0, UNKNOWN_TOKEN);